26.2: A single-inductor multi-output converter with multi-vector current control in power-saving driving skill of Electronic Paper Displays (EPDs)

Electronic paper display (EPD) shows the trend of state-of-the-art display technique. It not only holds image/text without consuming energy but also presents thin and flexibility like ordinary paper. Single-inductor multi-output (SIMO) converter, with innovative multi-vector current-control methodology, precisely tracks and quantifies the actual demanded-energy and addresses excessive-energy for power-efficient and space-minimized requirements of EPDs. The testing chip occupies 0.45 mm² in 0.25 μm CMOS technology and achieves the power conversion efficiency larger than 85 % at the order of 0.5 mW output power.